Multiple sawtooth-shape current reversals of traveling wave system

Ruyin Chen, Xiaowei Ruan, Chaojie Wang and Luoluo Jiang

Physica A: Statistical Mechanics and its Applications, 2022, vol. 593, issue C

Abstract: In this paper, we investigate current reversal (CR) of overdamped traveling wave system subjected to an symmetric periodic driving. Numerical results shown that current takes the form of sawtooth-shape, and its direction can reverse more than ten times with traveling wave velocity, called multiple sawtooth-shape CR here. In virtue of transformation of reference frame, we reveal that occurrence of the sawtooth-shape CR comes from step amplitudes induced by the periodic driving in the new reference frame, and reversal time of current depends on the driving and the spatial potential. Moreover, direction of the current changes with the increment of noise intensity in the rocking system, i.e., noise-induced CR, which has not been reported in previous works on stochastic traveling system, and the intrinsic physical mechanisms responsible for the CR is analyzed in detail.

Keywords: Traveling wave system; Symmetric periodic driving; Multiple sawtooth-shape current reversal; Noise-induced current reversal (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:593:y:2022:i:c:s0378437122000474

DOI: 10.1016/j.physa.2022.126929

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